#include  <stdio.h>

#include  <windows.h>

#include  <malloc.h>

#include  <conio.h>

FILE *sco;

FILE *bsc;

void print_(){                             //修饰
    
    for( int i=0; i<110; i++ )     
    { 
    
        printf("*");

        Sleep(10);                          //间隔输出
    }
    
    printf("\n"); 

}

void home_page()                             //主界面
{
     
     system ( "color 5b" );                  //背景颜色

     print_();                               //调用修饰函数
     
     printf("%48c 学生管理系统\n",' ');      //%45c   ,' '输入空格
     
     printf("%45c 1  查找\n",' ');
     
     printf("%45c 2  添加\n",' ');
     
     printf("%45c 3  删除\n",' ');
     
     printf("%45c 4  修改\n",' ');

     printf("%45c 5  浏览成绩\n",' ');

     printf("%45c 6  浏览信息\n",' ');

     printf("%45c 7  保存\n",' ');

     printf("%45c 8  文件读取\n",' ');

     printf("%45c 9  退出\n",' ');
     
     print_();

     printf("请选择:");
}


typedef char Str[100];
 
typedef  struct  Student_message                    //学生信息结构体
{
        Str  Name;
        //char  Name[20];                      //姓名
        Str  Number;
        //char  Number[8];                     //学号
        Str  Phone;
        //char  Phone[12];                     //电话
        Str  Scholarship;
        //char  Scholarship[7];                //奖学金情况
        struct  Student_message *Next;

}Student_message,*_message;
            




typedef  struct  Student_score                      //学生成绩结构体
{
        Str  name;                             //姓名
  
        Str  Adv;
        //char   Adv[4];                       //高数
        Str  Lin;        
        //char   Lin[4];                       //线代
        Str  Eng;
        //char   Eng[4];                       //大英
        Str  Pro;
        //char   Pro[4];                       //程序
        struct  Student_score *Next;

}Student_score,*_score;

 //       struct  Student_score   *Sco=0;
        
char *Filename1="学生信息.txt";

char *Filename2="学生成绩.txt";

_message Read_file1(char *filename1)
{

    _message stu_temp;

    _message stu_head = NULL;

    bsc=fopen(filename1,"r");

    if(!bsc)
    {
        printf("%s文件不存在!!!\n",filename1);
        
        return stu_head;

    }
   
    while(!feof(bsc))                          
    {
        stu_temp = (_message)calloc(1,sizeof(Student_message));
        
        fscanf(bsc,"%s %s %s %s\n",stu_temp->Name,stu_temp->Number,stu_temp->Phone,stu_temp->Scholarship);
        
        stu_temp->Next=stu_head;
        
        stu_head = stu_temp;
    }

    fclose(bsc);                                                      //关闭文件
    
    printf("读取完毕\n");
    
    return stu_head;

}


_score Read_file2(char *filename2)
{

    _score stu_temp;

    _score stu_head = NULL;

    sco=fopen(filename2,"r");

    if(!sco)
    {
        printf("%s文件不存在!!!\n",filename2);
        
        return stu_head;

    }
   
    while(!feof(sco))                          
    {
        stu_temp = (_score)calloc(1,sizeof(Student_score));
        
        fscanf(sco,"%s %s %s %s %s\n",stu_temp->name,stu_temp->Adv,stu_temp->Eng,stu_temp->Lin,stu_temp->Pro);
        
        stu_temp->Next=stu_head;
        
        stu_head = stu_temp;
    }

    fclose(sco);                                                      //关闭文件
    
    printf("读取完毕\n");
    
    return stu_head;

}



void Save_file1(char *filename1, _message mes_head)                     //保存信息至文件
{
    _message stu_cur = mes_head;
 
    if(!mes_head)
    {
        return;
    }

    if(!(bsc = fopen(filename1,"w")))
    {
        bsc = fopen(filename1,"a+");
    }
    
    while(stu_cur)
    {
        fprintf(bsc,"%s %s %s %s\n",stu_cur->Name,stu_cur->Number,stu_cur->Phone,stu_cur->Scholarship);
        
        stu_cur = stu_cur->Next;
    }
    
    fclose(bsc);
    
    printf("保存完毕\n");
}

void Save_file2(char *filename2, _score sco_head)                     //保存信息至文件
{
    _score stu_cur = sco_head;
 
    if(!sco_head)
    {
        return;
    }

    if(!(sco = fopen(filename2,"w")))
    {
        sco = fopen(filename2,"a+");
    }
    
    while(stu_cur)
    {
        fprintf(sco,"%s %s %s %s %s\n",stu_cur->name,stu_cur->Adv,stu_cur->Eng,stu_cur->Lin,stu_cur->Pro);
        
        stu_cur = stu_cur->Next;
    }
    
    fclose(sco);
    
    printf("保存完毕\n");
}



void Search_message(_message mes_head)                                        //查找学生信息
{
    _message stu_cur = mes_head;
   
    Str msg;
    
    if(!mes_head)
    {
        printf("\n当前无任何信息记录!!!\n");
       
        return;
    }
    
    printf("\n输入要查找学生姓名: "),scanf("%s",msg);
   
    while(stu_cur)
    {
        
        if(!strcmp(stu_cur->Name,msg))
       
        {
            printf("姓名: %s\n",stu_cur->Name);
            
            printf("学号: %s\n",stu_cur->Number);
            
            printf("电话: %s\n",stu_cur->Phone);
            
            printf("奖学金信息: %s\n",stu_cur->Scholarship);
            
            return;
        }
        
        stu_cur = stu_cur->Next;
    }
    
    printf("输入的信息不存在!!!\n");

}

void Search_score(_score sco_head)                                        //查找学生信息
{
    _score stu_cur = sco_head;
   
    Str sco;
    
    if(!sco_head)
    {
        printf("\n当前无任何信息记录!!!\n");
       
        return;
    }
    
    printf("\n输入要查找学生姓名: "),scanf("%s",sco);
   
    while(stu_cur)
    {
        
        if(!strcmp(stu_cur->name,sco))
       
        {
            printf("姓名: %s\n",stu_cur->name);

            printf("高数: %s\n",stu_cur->Adv);
            
            printf("大英: %s\n",stu_cur->Eng);
            
            printf("线代: %s\n",stu_cur->Lin);
            
            printf("程序: %s\n",stu_cur->Pro);
            
            return;
        }
        
        stu_cur = stu_cur->Next;
    }
    
    printf("输入的信息不存在!!!\n");

}

_message Add_message(_message mes_head)                                          //添加学生信息
{
    _message stu_temp = (_message)calloc(1,sizeof(Student_message));
   
    printf("\n姓名: "),scanf("%s",stu_temp->Name);
    
    printf("学号: "),scanf("%s",stu_temp->Number);
   
    printf("电话: "),scanf("%s",stu_temp->Phone);
    
    printf("奖学金信息(若无请输入\"无\"): "),scanf("%s",stu_temp->Scholarship);
   
    stu_temp->Next = mes_head;
    
    return stu_temp;
}


_score Add_score(_score sco_head)                                          //添加学生信息
{
    _score stu_temp = (_score)calloc(1,sizeof(Student_score));
   
    printf("\n姓名: "),scanf("%s",stu_temp->name);
    
    printf("高数: "),scanf("%s",stu_temp->Adv);
   
    printf("大英: "),scanf("%s",stu_temp->Eng);
    
    printf("线代: "),scanf("%s",stu_temp->Lin);

    printf("程序: "),scanf("%s",stu_temp->Pro);
   
    stu_temp->Next = sco_head;
    
    return stu_temp;
}

_message Delete_message(_message mes_head)                                         //删除学生信息
{
    _message stu_temp,stu_cur = mes_head;
    
    Str msg;
    
    if(!mes_head)
    {
    
        printf("\n当前无任何信息记录!!!\n");
        
        return mes_head;
    }
    
    printf("\n请输入要删除的学生姓名: "),scanf("%s",msg);
    
    if(!strcmp(mes_head->Name,msg))
    {
        stu_temp = mes_head;
       
        mes_head = stu_temp->Next;
        
        free(stu_temp);
        
        printf("删除成功!!!\n");
        
        return mes_head;
    }
    while(stu_cur->Next)
    {
        if(!strcmp(stu_cur->Next->Name,msg))
        {
            stu_temp = stu_cur->Next;
            
            stu_cur->Next = stu_temp->Next;
            
            free(stu_temp);
            
            printf("删除成功!!!\n");
            
            return mes_head;
        }
        
        stu_cur = stu_cur->Next;
    }
    
    printf("输入的信息不存在!!!\n");
    
    return mes_head;
}


    
_score Delete_score(_score sco_head)                                         //删除学生信息
{
    _score stu_temp,stu_cur = sco_head;
    
    Str sco;
    
    if(!sco_head)
    {
    
        printf("\n当前无任何信息记录!!!\n");
        
        return sco_head;
    }
    
    printf("\n请输入要删除的学生姓名: "),scanf("%s",sco);
    
    if(!strcmp(sco_head->name,sco))
    {
        stu_temp = sco_head;
       
        sco_head = stu_temp->Next;
        
        free(stu_temp);
        
        printf("删除成功!!!\n");
        
        return sco_head;
    }
    while(stu_cur->Next)
    {
        if(!strcmp(stu_cur->Next->name,sco))
        {
            stu_temp = stu_cur->Next;
            
            stu_cur->Next = stu_temp->Next;
            
            free(stu_temp);
            
            printf("删除成功!!!\n");
            
            return sco_head;
        }
        
        stu_cur = stu_cur->Next;
    }
    
    printf("输入的信息不存在!!!\n");
   
    return sco_head;
}


void Modify_message(_message mes_head)                                     //修改学生信息
{
    _message stu_cur = mes_head;
    
    Str msg;
    
    if(!mes_head)
    {
   
        printf("\n当前无任何信息记录!!!\n");
     
        return;
    }
   
    printf("\n请输入要修改的学生姓名: "),scanf("%s",msg);
  
    while(stu_cur)
    {
        if(!strcmp(stu_cur->Name,msg))
        {
            printf("请输入信息替换:\n\n");
           
            printf("\n姓名: "),scanf("%s",stu_cur->Name);
          
            printf("学号: "),scanf("%s",stu_cur->Number);
         
            printf("电话: "),scanf("%s",stu_cur->Phone);
         
            printf("奖学金信息(若无请输入\"无\"): "),scanf("%s",stu_cur->Scholarship);
        
            return;
        }
        
        stu_cur = stu_cur->Next;
    }
   
    printf("输入的信息不存在!!!\n");
    
    return;
}

void Modify_score(_score sco_head)                                     //修改学生信息
{
    _score stu_cur = sco_head;
    
    Str sco;
    
    if(!sco_head)
    {
   
        printf("\n当前无任何信息记录!!!\n");
     
        return;
    }
   
    printf("\n请输入要修改的学生姓名: "),scanf("%s",sco);
  
    while(stu_cur)
    {
        if(!strcmp(stu_cur->name,sco))
        {
            printf("请输入信息替换:\n\n");
           
            printf("\n姓名: "),scanf("%s",stu_cur->name);
          
            printf("高数: "),scanf("%s",stu_cur->Adv);
         
            printf("大英: "),scanf("%s",stu_cur->Eng);
         
            printf("线代: "),scanf("%s",stu_cur->Lin);

            printf("程序: "),scanf("%s",stu_cur->Pro);
        
            return;
        }
        
        stu_cur = stu_cur->Next;
    }
   
    printf("输入的信息不存在!!!\n");
    
    return;
}

void Display_message(_message mes_head)                                            //显示学生信息
{
    _message mes_cur = mes_head;
  
    if(!mes_head)
    {
   
        printf("\n当前无任何信息记录!!!\n");
   
        return;
    }
    while(mes_cur)
    {
     
        printf("\n姓名: %s\n",mes_cur->Name);
     
        printf("学号: %s\n",mes_cur->Number);
     
        printf("电话: %s\n",mes_cur->Phone);
     
        printf("奖学金信息: %s\n",mes_cur->Scholarship);
     
        mes_cur = mes_cur->Next;
    }
}

void Display_score(_score sco_head)                                            //显示学生信息
{
    _score sco_cur = sco_head;
  
    if(!sco_head)
    {
   
        printf("\n当前无任何信息记录!!!\n");
   
        return;
    }
    while(sco_cur)
    {
     
        printf("\n姓名: %s\n",sco_cur->name);
     
        printf("高数: %s\n",sco_cur->Adv);
     
        printf("大英: %s\n",sco_cur->Eng);
     
        printf("线代: %s\n",sco_cur->Lin);

        printf("程序: %s\n",sco_cur->Pro);
     
        sco_cur = sco_cur->Next;
    }
}

int main( int argc, char const *argv[] )
{
  
    char choice;

    _message mes_head = NULL;

    _score  sco_head = NULL;

    while(1)                    
    {
    
        home_page();            //进入主页面
    
        choice = getch();

        system("cls");

        switch(choice)          //进行选择
        {
            case '1':  Search_message(mes_head);
                       
                       Search_score(sco_head);
                
                                  break;

            case '2':  mes_head = Add_message(mes_head);
                       
                       sco_head = Add_score(sco_head);
                             
                                  break;

            case '3':  mes_head = Delete_message(mes_head);
                
                       sco_head = Delete_score(sco_head);
                
                                  break;

            case '4':  Modify_message(mes_head);
                
                        Modify_score(sco_head);
                
                                  break;

            case '5':  Display_score(sco_head);
                                  
                                  break;

            case '6':  Display_message(mes_head);
                            
                                  break;

            case '7':  Save_file1(Filename1,mes_head);

                       Save_file2(Filename2,sco_head);
                                  
                                  break;


            case '8':  mes_head = Read_file1(Filename1);

                       sco_head = Read_file2(Filename2);
                       
                       break;

            case '9':           exit(0);
                
                                  break;

            default:              break;

      }

}
        
    
    return 0;

}

室友程序

主要功能：查找修改删除添加学生成绩，并能储存文件中。

大一期末大作业，学习编程以来第一次编这种稍微有点长的程序。从中也知道了码代码格式的重要性（看的时候比较舒服，也比较清晰）；以及中括号先打全的重要性，避免之后还要慢慢找；函数之类的拼写也同样需要注意。

在编程过程中要时刻保持头脑清晰，以免突然逻辑混乱不知道这个循环或者判断有什么作用。就像是写作文一样，要先构思，并且条理清晰。这时候注释就起了很大的作用，有时候回过头看前面的代码时，有些过程已经不知道起了什么作用，及时做好注释既可以方便自己也能让别人理解容易一点（虽然我目前没有这种习惯，只是偶尔注释一下自定义函数的作用）。

编程还是需要靠积累（偶尔码代码偶尔爽，一直码代码一直爽！），同时还要关注新技术的出现，不然很快就会像过气的电脑硬件一样被淘汰掉。